Sintex® - Polymer-Bonded Neodymium Magnets (NdFeB)

Polymer-bonded NdFeB magnets are one of Sintex' core products. 

 

In the process behind the polymer-bonded NdFeB magnets, magnetic powder – consisting of rare earth metals, iron and boron – is mixed with a binder, after which it is compressed into the required geometry. The polymer-bonded NdFeB magnets are magnetised after hardening.

 

The magnetic material is isotropic, which means it can be magnetised arbitrarily with the number of poles and in the various directions required for the application concerned.

 

	Advantages:
	• Magnetization with multiple poles
	• Magnetization in any arbitrary given direction(s)
	• High mechanical strength
	• High magnetic strength compared to ferrites
	• More geometric possibilities – Magnets are compacted     individually – e.g. prepared for assembly in system
	• Powder savings in production – Magnets are compacted     individually in custom made tool (not blocks)

 

 

The maximum allowed temperature is around 140°C depending on the powder grade and the epoxy. The mechanical properties of the epoxy decrease above a given
temperature.

The material can corrode (however not as fast and severely as sintered NdFeB magnets) so usually some kind of coating or encapsulation is recommended.

 

 

 

PERMANENT MAGNETS